The locomotion system of human body is formed by bones, ligaments, joints and muscles. Its purpose is to make the static and movements in time and space, submitted to the terrestrial gravity. The static and movement and other organ function are ruled by the central nerve system. The information from the environment and the body itself is captured by senses (sight, hearing sense of touch, and taste). They are registered by nervous impulses and are transported by the nerves to the spinal cord and encephalon. Finally they come to the brain where sensations, emotions and thoughts are integrated. The brain studies the information and “answers” maintaining the posture and executing movements that diversifies depending on the image of oneself. The information-test-response process requires a learning that once it is standardized it forms mental and corporal patterns.
In the execution process muscles are innerved by special neurones which carry the impulse from he central nerve system to the voluntary muscles. These neurones are responsible of the beginning of the contraction process of the muscles they innerve. The motion neurones are used to receiving exciting stimulus which causes the muscle contraction and restraining ones which relax the muscle from other nerve sources.
The motion neurones are shot and it begins the muscles contraction when the surrounding membranes receive exciting stimulus. The exciting facts cause the muscle contraction so a musician is able to contract a muscle by voluntarily activation of the nerves that generate the stimulus But not all the stimulus that the motion neurones receive are exciting. Some of them are restraining, so they relax the muscle instead of exciting it.
Such stimulus production depends on the tension developed by the muscle on the tendon. This way and respecting to a particular muscle the exciting facts provoke the contraction of it meanwhile the restraining ones lead to relax. This relaxation system is a kind of protection because if the muscle contracts in excess it an cause a breaking of the muscle and tendon.
A good musical education offers the possibility to change the behaviour patterns that cause suffering for other healthier alternatives through conciousness, learning and practice. It is all about an educational system about oneself which is supported by two principal concepts: movement and conciousness. Working on the idea that the human beings (anyone is their  age and physical condition) have a transformation potential, movement and observing oneself  are the means to develop the ability to learn, transform and grow on, during all life long. He learning through the central nerve system can be done in a spontaneous and intuitive way (as in other animal species= or using the personal experience. Hen a pupil practises an instrument it generates an image of hw to do the movement. That image contains four concepts that are together in every action in a variable way: movement, sensation, feeling and thought. He teacher gives the instructions to make the movements the pupil will practice, paying attention to the work, without effort and with pleasure.